JP2002137740A - Carriage for stacking chair - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a carriage for loading stacking chairs in a stacked state, capable of improving the stability of a group of loaded chairs, and coping with the difference in shape of legs. SOLUTION: This carriage comprises a base 13 having a frame structure, casters 15, and a handle 16. A first supporting part 17 for loading left and right legs of backwardly inclined chairs, and a second supporting part 18 receiving back faces of the chairs, are mounted on left and right inner parts of the base 13, and both supporting parts 17, 18 are made of a flat plate of metal.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cart for a stacking chair.

[0002]

2. Description of the Related Art In various venues, stackable chairs that can be stacked are often used in order to make effective use of storage space.

This stacking chair is roughly classified into a four-legged type in which four legs are provided at four corners of a seat body, and a frame leg type in which left and right legs are formed in a square shape in side view. . In any case, by tilting the left and right legs so as to form a C-shape when viewed from the front, the seat of the lower chair fits between the left and right legs of the upper chair.

Also, this kind of chair has a backrest, so that when the chairs are stacked in multiple stages, the chairs in the upper stage overhang the chairs in the lower stage toward the front side. Stacked in state. Therefore, when a large number of chairs are stacked on a trolley, each chair is placed in a lying position, whereby the row of stacking chair groups is extended directly above.

[0005] The conventional cart for the stacking chair generally has a structure in which a frame is formed of a metal pipe and a caster is provided on the frame.

As an example, Japanese Patent Application Laid-Open No. 2000-19844
No. 9 and JP-A-2000-198449,
As a bogie for a main-leg type stacking chair, a backrest supporting portion for supporting a backrest of the lowermost chair, and a backrest supporting portion for supporting a seat of the lowermost chair, which is inclined rearward in a side view, are provided. A pipe trolley is disclosed.

[0007]

When a large number of chairs are stacked on a trolley, it is important that the lowest chair be placed on the trolley in a stable posture. However, in the configuration of the above publication, the chair is not necessarily processed with high accuracy, and the chair may be tilted when the mounting position of the chair is shifted left and right. If a large number of stages are stacked, the stability may be deteriorated.

[0008] Further, there is another problem that the cart of the above publication can only mount a four-legged chair and cannot be applied to a chair having a frame structure.

The present invention has as its main object to solve these problems.

[0010]

SUMMARY OF THE INVENTION The present invention is a cart capable of carrying and storing a large number of chairs with backrests in a stacked state. And the chair to be mounted on the cart of the present invention is stacked in multiple stages with the seat of the lower chair fitted between the left and right legs of the upper chair, and when each chair is tilted backward, The rows of the stack extend directly above.

According to the first aspect of the present invention, the bogie includes a first support portion that supports a lower surface of a leg of a chair in a rearwardly inclined position, and a forwardly inclined first support portion, and a back surface of the chair in a rearwardly inclined position. A second support portion that is inclined rearward in a side view is provided for supporting, and both of the support portions are formed of a plate material.

The chair mounted on the trolley according to the second aspect of the present invention has legs formed by a metal pipe into a frame shape in which legs rise from both front and rear ends of a horizontal portion extending along the floor. Further, the cart according to the second aspect is provided with a regulating means for preventing the left and right legs of the plurality of chairs located at the lower part of the many stacked chair groups from excessively expanding and deforming toward the left and right outer sides.

According to a third aspect of the present invention, as in the second aspect, the chair mounted on the cart has a frame shape in which legs are raised by metal pipes from both front and rear ends of a horizontal portion extending along the floor. A connecting tool for connecting the horizontal portions of the legs of the adjacent chair when the chairs are arranged side by side can be detachably attached to the horizontal portion of one leg in this chair. .

According to a third aspect of the present invention, there is provided the bogie according to the third aspect of the present invention, wherein the connecting tool has a left and right width on which a chair can be placed in a state where the connecting tool is mounted on one of the horizontal portions of the legs. A guide portion is provided on a portion located on the opposite side to a lower horizontal portion of the leg of the chair located at the lowest stage where the connecting member cannot be attached.

[0015]

According to the present invention, the lowermost chair can be placed on the trolley in a state in which the posture is stabilized because the lower surface of the leg hits the first support portion of the trolley as in the case of setting on the floor. it can. Further, since the supporting portion of the cart is made of a plate material, a stable posture can be maintained even if the lowermost chair is slightly shifted left and right.

As described above, according to the present invention, since the lowermost chair can be held in a stable posture, the stability can be improved when a large number of chairs are stacked on a cart.

Further, since the first supporting portion supports the legs of the chair from below, the present invention can be applied to a chair having a rectangular frame structure in a side view without any problem. Of course, the present invention can also be applied to stacking of four-legged chairs.

By the way, when the chairs are stacked in multiple stages, the legs of the chair located below may spread right and left and deform due to the weight of the chair group located above. The degree of the spreading deformation increases as going to the bottom.

With respect to this point, with the configuration according to the second aspect, it is possible to prevent the right and left legs from being excessively expanded and deformed by the restricting means for the lower chair where the left and right legs are most likely to expand and deform. It is possible to prevent or significantly suppress the left and right legs from being plastically deformed and the stability from being lowered when the left and right legs are stacked on a truck.

According to the third aspect of the present invention, the stacking position of the chairs can be accurately determined by the guide portion even if the width of the carriage is set to be slightly larger in accordance with the presence or absence of the coupler of the chair. be able to.

[0021]

Next, embodiments of the present invention will be described with reference to the drawings.

(1). Configuration of Chair (FIGS. 1 to 3) Prior to the description of the cart of the present embodiment, first, a chair mounted on the cart will be described with reference to FIGS. 1 is an overall schematic perspective view, FIG. 2 is a front view, FIG. 3A is a plan view, and FIG. 3B is a right side view.

The chair has a seat frame 1 made of a steel pipe and having a substantially quadrangular shape in a plan view, a pair of left and right leg frames 2 for supporting the left and right sides of the seat frame 1, and a left and right leg frame 2. Reinforcing reinforcement frame 3
A pair of back posts 4 erected at the left and right rear portions of the seat frame 1, a seat body 5, and a backrest 6 with a cushion 7.

The left and right horizontal portions 1c, the leg frames 2, and the back struts 4 of the seat frame 1 extend in series, and are connected to the front and rear horizontal portions 1a and 1b of the seat frame 1 and the reinforcing frame 3.
And connected.

On the left and right sides of the backrest 6, there are integrally formed downward cylinders 6a which fit into the back columns 4, and the downward cylinders 6a are fixed to the back columns 4 with screws (not shown). .

The leg frame 2 includes a horizontal portion 2a extending along the floor, a forefoot portion 2b rising from a front portion thereof, and a rear foot portion 2c rising from a rear portion of the horizontal portion 2a to have a substantially trapezoidal shape in a side view. Is formed.

As clearly shown in FIG. 2, the left and right legs 2 are in a C-shape when viewed from the front so that the distance between the legs 2 increases downward. For this reason, as shown in FIG. To
Multiple chairs can be stacked.

In this embodiment, when the chairs are stacked, the front grounding bodies 9 of the chairs which are vertically stacked are set to overlap each other. For this reason, the chairs are stacked in an accurate posture without tilting left and right. Further, in a stacked state, the downward cylindrical portion 6a of the backrest 6 is set so as to overlap with the front and rear. For this reason, it can prevent that the backrest 6 is damaged.

In FIG. 2, the cushion 7 of the backrest 6 is shown.
Is not displayed (there may be a type without cushion).

The horizontal part 2a and the forefoot part 2 of the left and right legs 2
The front grounding member 9 is attached to the connecting portion with the b, and the rear grounding member 10 is mounted at the rear of the horizontal portion 2a. Further, a pair of front and rear connectors 11 are attached to the right horizontal portion 2a (or the left horizontal portion) in a state of being in close contact with the rear surface of the front grounding member 9 and the front surface of the rear grounding member 10.

The connecting member 11 is for connecting the chairs arranged side by side on the left and right. An upwardly extending concave portion is formed in a portion which protrudes outward, and an adjacent upward chair is formed in this concave portion. The horizontal portion 2a of the leg 2 is fitted from above.

(2) Configuration of the bogie (FIGS. 4 to 8) Next, the configuration of the bogie will be described with reference to FIGS. 4 is a side view of a state in which chairs are stacked, FIG. 5 is an overall perspective view, FIG. 6 is a partially cutaway perspective view, FIG. 7 is a partial plan sectional view, and FIG. 8 is a partial plan view. .

[0033] Basic Configuration The cart has a base 13 made of a round pipe formed by a front and rear frame 13a and a side frame 13b and having a quadrangular shape in a plan view, and casters 15 are attached to the four corners via bracket plates 14. A handle 16 is screwed to one end of the base 13.

Inside the left and right side frames 13b, the lower leg of the chair 2
The first support portion 17 which is inclined forward when viewed from the side, and the second support portion 18 which is inclined rearward when seen from the side and which is in contact with the back surface of the lowermost chair are arranged. In the present embodiment, the downwardly directed tubular portion 6 a of the backrest 6 is in contact with the second support portion 18.

The support portions 17 and 18 are formed of a single metal strip (may be separated from each other), and the first support portion 17 and the second support portion 18 are connected via a flat valley portion 19. Have been. At the upper ends of the two support portions 17, 18, mounting portions 17a, 18a extending downward are integrally connected.
The mounting portion 17a of the first support portion 17 is fixed to the front bracket plate 14 (or the front frame of the base 13).

Left and right side frames 13b of the base 13
Are connected by a center reinforcing frame 20 to which a lower portion of the second support portion 18 is welded and a rear reinforcing frame 21 to which a rear bracket plate 14 is attached. The mounting portion 18a of the second support portion 17a is fixed to the rear reinforcing frame 21 by welding or the like (the rear bracket plate 14).
May be fixed).

As shown in FIG. 4, both support portions 17, 18
Is set at an angle such that the rows of stacked chair groups extend directly above. As shown in FIG. 7, a regulating member 22 to which the back column 4 of the chair fits is fixed to the upper end of the second support portion 18. For this reason, the lowermost chair is held at the upper part thereof so as not to be displaced from side to side.

[0038] As an example of the restricting means described in the claims, a fence 23 surrounding the legs 2 of a plurality of chairs located at the lower part of the stacked chair group is provided on the left and right side frames 13b of the spread prevention fence base 13. Has been established.

The fence 23 is made of a round pipe and is welded to the side frame 13b. As can be easily understood from FIG. 4, the front end 23a of the fence 23 is set to be located at the position of the front grounding body 9 of the stacked chairs.

As in the present embodiment, when the front grounding members 9 of the chairs vertically overlap each other, the weight of the chair located on the upper stage acts on the leg 2 of the chair on the lower stage. The right and left legs 2 of the chair are deformed so that the distance between them becomes wider as they go, but the presence of the left and right fences 23
The left and right legs 2 of the lower chair receiving the largest load can be prevented from being excessively expanded and deformed.

The distance between the left and right fences 23 does not necessarily have to be equal to the distance between the side frames 13b, and may be set to a dimension smaller than the distance between the side frames 13b. Further, it may be set so that a plurality of portions of the leg 2 of the chair hit the fence 23.

As shown by the dashed line in FIG. 5, the front ends of the right and left fences 23 are connected by connecting rods 24a, and the respective fences 23 are connected to the front frame by reinforcing rods 24b. The fence 23 may be reinforced.

. Guide member The chair connector 11 is to be installed according to the user's request (that is, an optional accessory), so that the cart can accommodate both the chair with the connector 11 installed and the chair not installed. There is a need. For this reason, as shown in FIG. 8, the space between the left and right side frames 13b is set wider so that the chair to which the connecting tool 11 is attached can be mounted.

As an example of the guide means described in the claims, the first support portion 1 located on the opposite side to the connecting tool 11
A guide member (positioning member) 25 is stretched and fixed between the lower portion of the second support portion 7 and the second support portion 18, and one leg (the left leg in the present embodiment) of the lowermost chair is brought into contact with the guide member 25. The chair can be accurately positioned regardless of the presence or absence of the connection tool 11.

As the chair positioning means, it is possible to use the side frame 13b located on the side opposite to the connecting tool 11 as the guide means without providing the guide member 25, but as in this embodiment, When the guide member 25 is provided in a state where it is spaced from the side frame 13b, the connecting member 1
Since the center line of the chair and the center line of the cart can be matched regardless of the presence or absence of 1, there is an advantage that the center of gravity of the chair group is aligned with the center of the cart and the stability of the chair group can be further improved.

The guide member 25 does not need to be elongated in the front-rear direction. As shown by a two-dot chain line in FIG. 8, a block-shaped guide member 25a is provided on the side frame 13b (or the support portions 17, 18). May be.

As shown by a dashed line in FIG. 8, instead of (or in addition to) providing the guide members 25, 25a on the support portions 17, 18 or the side frame 13b on the opposite side to the connecting tool 11, The connecting tool 1 is attached to the side frame 13b or the supporting portions 17 and 18 on the side where the connecting tool 11 is located.
The guide member (stopper) 25b may be provided without interfering with the first and rear grounding members 10.

Needless to say, the frame 1
The 3a, 13b, 20, 21 and the fence body 23 are not limited to being made of a metal round pipe, but may be made of a square pipe or a shape steel such as an angle material. In addition, fence body 23
May be made of a metal plate.

(2) Another Embodiment (FIG. 9) In another example shown in FIG. 9, the support portions 17, 18 are formed in a groove shape. In this embodiment, the supporting portions 17 and 18 on which the legs 2 to which the connecting members cannot be attached are placed are shown, and the grounding bodies 9 and 10 are shown.
Is set so as to hit the side plate 26. The side plate 26 may intersect the support portions 17 and 18 at a right angle, so that the chair positioning function can be further improved.

(3) Others The present invention can be further embodied in various ways.

For example, the left and right support portions may be formed integrally and continuously. Alternatively, the shape of the first support portion and the second support portion may be different by changing the inclination angle and the left-right distance. It is also possible to use a single dolly for the chair.

[Brief description of the drawings]

FIG. 1 is a perspective view of a chair according to a first embodiment.

FIG. 2 is a front view of a chair.

3A is a plan view of a chair, and FIG. 3B is a right side view of the chair.

FIG. 4 is a side view showing a use state of the embodiment of the present invention.

FIG. 5 is a perspective view of the entire cart.

FIG. 6 is a partially cutaway perspective view of the truck.

FIG. 7 is a partial cross-sectional plan view of the carriage.

FIG. 8 is a partial plan view of the cart.

FIG. 9 is a diagram showing a modification.

[Explanation of symbols]

 DESCRIPTION OF REFERENCE NUMERALS 1 seat frame 2 legs 5 seat body 9 front grounding body 10 rear grounding body 11 connecting tool 13 bogie base 13b side frame 16 handle 17 first support part 18 second support part 23 fence body for preventing spread 25, 26 , 27 Guide member

Claims (3)

[Claims] 1. A trolley capable of carrying and storing a large number of chairs with backrests in a stacked state, wherein each chair has a seat of a lower chair fitted between left and right legs of an upper chair. In a state where the chairs are stacked in multiple stages and each chair is tilted rearward, the row of stacking is configured to extend directly upward, while the cart is configured such that the lower surface of the legs of the chair in the tilted rearward posture is set. A first support portion for supporting the chair in a forwardly inclined position and a second support portion for supporting a back surface of the chair in a rearwardly inclined position, both of which are formed of a plate material. , A trolley for stacking chairs. 2. The leg of each chair is formed by a metal pipe into a frame shape with legs rising from both front and rear ends of a horizontal portion extending along the floor, while the bogie has a large number of stacked chairs. The truck for a stacking chair according to claim 1, further comprising a restricting means for preventing the left and right legs of the plurality of chairs located at the lower part of the group from being excessively widened and deformed toward the left and right sides. 3. The leg of each chair is formed by a metal pipe in the form of a frame with legs rising from both front and rear ends of a horizontal portion extending along the floor. When the chairs are arranged side by side, a connecting tool for connecting the horizontal parts of the legs in the adjacent chair can be detachably attached, while the bogie is such that the connecting tool is attached to one horizontal part of the legs. The width of the chair is set to the left and right so that the chair can be placed in the installed state, and the connecting part of the legs of the lowest chair is attached to the part of the bogie located on the opposite side to the connecting part attached to the chair. The cart for a stacking chair according to claim 1 or 2, further comprising a guide portion that can be contacted by a lower horizontal portion.